Our friend company, SSS(Three S) has developed a STL system making use of a projector for computers, and is in business.
Autofact has developed a software called NfDesignCS for the system based on its NfDesign.

This Page informs the features of the system, called PROJECTION MODELER, and editing samples of STL data with our NfDesignCS.

Features of the PROJECTION MODELER

• The system incorporates a program, NfDesignCS, which is used for editting STL, generating supports, and calculating cross sections and generating projection images.

• A projector is used and resin is hardened by projection ray.

• Sliced data of 3D STL are converted to black and white images being projected by the projector.

• The size of the images is due to projectors and parameters in the software. <

• Projection ray is focused on a transparent film on which resin is spreaded thin. Then a projected image is hardened.

• One projection hardens 0.025, 0.05, 0.1mm thick and all the hardened resin are heaped up.

• Since one projection hardens projected image at once, very rapid solodification is possible.(projection exposure time: 2-6 sec. depending on resins.)

• The hardware is simple and it's cycle time is 4-8 sec. including exposure time.

• Please refer to SSS Inc. for further information.

Edit Samples with NfDesignCS and Real Solidified Samples

• The first of the following three is a rendering image of some protein molecular model within NfDesignCS.
  Please refer to this treaties too, though it is written in Japanese.
  The 3D coordinate of each atom forming a protein molecule is expanded by several hundred millions(1A=1.8mm).
  NfDesignCS makes it possible to arrange metaball at each center.
  Metaballs within a distance are merged each other and all the entities are converted to polygons.
  Narrow circular cylinders(yellow) are for supports of which positions are automatically calculated by another program.
• Due to a newly developed software technology, sphere polygons can directly be applied to molecules at present.
  As a result, the boundaries between molecules can clearly be generated. Please refer to this IMAGE.
• The next images are a real sample with the PROJECTION MODELER and original RASMOL image.

  

  



• The first of the next two images is a core controller for CRT rendering by NfDesignCS
  and the second is the model with supports semi-automatically added to the model by NfDesognCS.
  After editing, the model needs to be sliced for the use of the syste.

  

  



• The first image of the following three, is a rendering of rotor by NfDesignCS>
• The second is a cut model of the original by NfDesignCS.
• The second model is sliced to be solidified in the system. Some parts of sliced images are indicated.
  The sequence of the images is up to down and left to right.

  

  

  



• The first of the following three is an image of a portrait bust.
• The second is edited to have a cave after solidification. The cavity is the light blue area.
• The third is the solid image.